Feed-water regulator.



R. M. HUNTER. FEED'WATER REGULATOR.

I APPLIOATION FILED MAR. 17. 1909. 95%, Patented Aug. 3a, 1910.

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EEED WATER REGULATOR. APPLIOATIOE PILB'D MAR. 17. 1909.

' "Patented Aug. 30, 1910.

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RUDOLPH M. HUNTER, 0F PHILADELPHIA, EENNSYLVANIA, ASSIGNOR TQ CHARLES MOTLEY CLARK, OF EHILADELPHIA, PENNSYLVANIA.

FEED-WATER REGULATOR.

Specification of Letters Patent.

Patented Aug. 30, 1910.

To all whom it may concern:

Be it known that I, RUDOLPH M. HUNTER, a citizen of the United States, and resident of the city and county of Philadelphia, State of Pennsylvania, have invented an Improvement in F eed-lVater Regulators, of which the following is a specification.

My invention has reference to feed water regulators and consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings which form a part thereof.

The object of my invention is to provide automatic means for maintaining a proper supply of feed water to the boiler, said nieans being controlled by the variations in the level of the water in the boiler relatively to the normal level which is to be maintained. My invention consists of a pump to force water into the boiler against the pressure therein, combined with a pump governor to control the operation of the pump and operated by water pressure, and means for producing a differential of water pressures for operating the ump governor consisting of a pipe connecting with the boiler below the water level for sunnlving water under boiler pressure to operate the pump governor in one direction, a pipe connecting with the discharge pipe of the pump for supplying water under the pump pressure to operate the pump governor in the other direction,

means controlled by the level of the water in the boiler to equalize the water pressures supplied to the pump governor, and means for operating the pump governor when the water pressures thereto are equalized, or made more nearly equal.

My invention further consists in forn'iing he pump governor with an operating means comprising a chamber having a diaphragm provided with an opening and an annular seat, combined with a piston rod, a piston device therefor having a cylindrical part fitting the opening in the diaphragm and terminating in a valve piece adapted to close tightly upon ths scat on the diaphragm, and pipes for supplying a fluid under pressure to the chamber above and below the diaphragm.

v My invention also oomprehends other feainvention; Fig. 2 is a sectional elevation of the pump governor thereof; and Fig. 3 is a sectional elevation of the bypass control valve for the amp overnor.

2 is the loci er and 3 is its water column having the usual gage cocks. The column 3 is connected at the bottom with the boiler below the water level by a pipe 5 and at the top with the steam space by a pipe at. The boiler feed pump 10 sup lies feed water to the boiler by'pipes 6 and 7 having a check valve 8 and is controlled by a pump governor 11 comprising a steam valve device 12 havin its valve piece 14: operated by motor 16 ant weighted lever 22 under the control of the water level in the boiler. The valve device 12 and 14; may be a balanced valve of any suitable construction for controlling the supply of steam to the pump, the steam being supplied by a steam pipe 11. The valve piece 14 is moved by a piston rod 13 connected at its top with a piston device 14 comprising a cylindrical part 15 having at its top an annular valve 14. The piston works through a diaphragm 18 of considerable depth and having at its top a valve seat- 19 for the valve 14. This diaphragm separates a lower chamber 17 from an upper chamber 20. The piston 15 need not be a very close fit to the cylinder 18 because during the operation some leakage of water from the upper chamber to the lower chamber will not interfere with the proper operation; but when the steam valve 14 is closed tight to stop the pump, then the valve 14 is tight upon its seat 19 and no leakage between the chambers 20 and 17 is possible. This form of motor overcomes'the necessity of packing or close fitting, reduces friction and is inexpensive. The steam valve 14 and its piston rod 13 are lifted by a lever 21 counter-Weighted at 22 and are depressed or lowered by an excess of pressure in vice 14".

The chamber 20, of the motor device 16 of I the pump governor is connected with the boiler feed pipe 7, bet-ween the pump 10 and check valve 8, by a pipe 25, so that at all turcs of construction which to ether with 1 times it is sub'ected to the ressnre of the a e, l

. feed pump, feed water pipe from the pump ation of the pump having a pressure actu- I the pump into operation, means for supplysures supplied to'the opposite sides of the operation, means for supplying a pressure assets sure actuated device to move it in the other direction, and means controlled by the varia tions in the. water level in the boiler to change the relative difierences in the prespressure actuated devices, whereby the pump is put into operation when the level of water in the boiler falls below the normal level.

2. In apparatus of the character described, the combination of the boiler, boiler to the boiler, a check valve in the feed water pipe, a pump governor to control the operated device, means for supplying a. pressure greater than the boiler pressure to the pressure actuated device to move it in one direction, means for supplying a pressure corresponding to the boiler pressure to the pressure actuated device to move it in the other direction, and means controlled by the variations in the water level in the boiler to change the relative differences in the pressures supplied to the opposite sides of the pressure actuated devices"'cons1sting of a by pass and valve for increasing the pressure upon the side. of the pressure actuated device which is subjected to the lower pressure, whereby the pump is put into operation when the level of water in the boiler falls below the normal level.

3, In apparatus of the character described, the combination of the boiler, boiler feed pump, feed Water pipe from the pump to the boiler, a. check valve in the feed water pipe, a pump governor to control theoperation of the pump having a pressure actuated device to regulate the operation of the pump and also put it out of operation and a counter Weight normally operating to put mg a pressure greater than the boiler pressure to the pressure actuated device to move it in one direction to putthe pump out of corresponding to the boiler pressure to the pressure actuated device to move it in the other direction to assist the counter weight in putting the pump into operation, and

means controlled by the variations in the wafer level in the boiler to change the relative ditierenccs in the pressures supplied to the opposite sides of thepressure actuated devices," whereby the pump is put into operation when the level of water in the boiler falls below the normal level.

4. in apparatus of the character described, the combination of the boiler. boiler feed pump, feed water pipe from the pump to the boiler, a check valve in the feed water pipe, a pump governor to control the operation of the pump, having a pressure agtu- I ated device, means for supplying apressure greater than the boiler pressure to the pres-- sure actuated device to move it in one direction, means for supplying a pressure corresponding to the boiler pressure to. the pressure actuated device to move it in the other direction, and means controlled by the variations in the water level in the boiler to change the relative differences in the pressures supplied to the opposite sides of the pressure actuated devices consisting of a by pass and valve for increasing the pressure upon the sideof the pressure actuated device which is subjected to the lower pressure, a motor for operating the by pass valve and a variable water column to operate the motor controlled by the water level in the boiler, whereby the pump is put into operation when the level of water in the boiler falls below the normal level.

5. In apparatus of the character described, the combination of the boiler, boiler to stop the pump, a pipe from the pump governor and connecting with the feed water pipe between the check valve and boiler for supplying pressure for operating the pump governor to put the pumpinto operation, a weight device to assist the pump governor in putting the pump into operation, a by pass pipe and valve for so plying Water under pressure from the feed water pipe between the pump and check valve to the pipe connecting the pump governor with the feed Water pipe between the check valveand boiler, and means controlled by the level of the water in the boiler for operating the by pass valve, whereby the pump is put into operation automatically whenever the level of the water in'the boilergets below the normal level.

(3. Iwapparatus of the character described, the combination of the boiler, boiler feed pump, {feed water pipe from the pump to the boiler, a check valve in the feed water pipe, a pump governor to control the operatlon of the pump having a pressure actuated device, means compr1sing a pipe connecting with the feed Waterlpipe between the pump and check valve for supplying' pressure for operating the pump governor to stop the pump, a pipe from the pump governor and connecting with the feed water pipe between the check valve and boiler for supplying pressure for operating the pump governor to put the pump into operation, a weight device to assist the pump governor in putting the pump into operation, a by pass pipe and valve for supplying Water under pressure from the, feed Water pipe between the pump and check valve to the pipe conpiston is,

nesting the pump governor w' the '5 water pipe beiween fine cheek ive and boiiei', p use motor for epemting the by pass valve, and means eensisiing of a water column of varying pressure centre-fie by the ievei of the wa ter the boiier for operating me motor which operafies the by pass valve, whereby the pump ispn'i; into operation auteinnt-iesiiy whenevertne levei of the water in he boiier gees below the nermai level.

7. In sppai'stns (if the character described, a boiier, ceznbined wish :1 feed water pump fer snppiyng wetei to the boiler, and. s pump governor eensisting a steam vaive t0 eonti el the steam supnlied the pump, a eonniergweighi ie @3911 the sieen valve, two ehnmqers separated in a ephragin having waive seen, a pistnn working through the diepnregmend having waive piece to seat npen the valve seat when the the ierminstinn its sti'eiie e piston red connecting the. pisten. the steam valve, water pipes for supplying water to the twe chambers, emi means cnntrolled by the water level 0% the boiler fer varying the difierenee in the pressures of the ewe chambers,

8. sad water pump emit/roiling il l tlfifv consisting 0 two chambers separated by a diaphragm having a valve seat, a piston working through she diaphragm and having a 'i'sive piece to seat upon the valve seat when the piswn is at the termination of its stroke a piston rod connected with the pisien, and pipes respectively connecting with tiieJwn chambers for supplying fluid pressures above and beiow the piston.

9. Feed water pump eont 'oiling means consisting of te n chambers seperate by a di: phlegm having a valve seat, a piston Wei-king through the diaphragm and having :1 valve to seat upon the valve seat when the pisten is at the termination of its stroke a pistnn rod eennected with the pisten, and pipes respeciiveiy connecting with the iwo chambers for supplying fluid presabeve em below the piston and a eminter weight connecting with the piston red for lifting it and she pistons when penniited by she eoiiperating pressures within the chambers.

in testimony of which inventien, 1 hereunto set my hand.

RUDOLPH M. HUNTER.

Witnesses i i. Kellen E. Gr. FARLEY. 

